Is a zinc carbonate with formula ZnCO3. Hardness 4-4.5.
It is found in various part of the world, from Namibia to Mexico and China.
Is one of the most important ore for the extraction of Zinc and can be found in various colors.
This new material ,fluorescent in pink-red at short wave comes from China.
Size: 13.7x9.2x5.8 mm.
Weight: 8.51 ct.